gst on old generator

18% GST applicable

Sir our business is of non vat goods..petrolium
We buy a generator in vat period
Now business is closed but gst no is activ and also business have stock
But we are not continuing our business
Now we want to sell generator
So what is its procedure? We have to generate tax invoice bill for generator..
N we are selling it to the rgistered firm.

Yes as per Schedule II its Supply so issue Tax Invoice for the same